Both microwave-assisted and conventional acidic treatments for the purification and functionalization of multi-wall carbon nanotubes were investigated. Impurities such as zeolite, catalyst particles and amorphous carbon were eliminated. In comparison to the harshness of the acidic treatment of a conventional technique, the microwave-assisted procedure makes it possible to obtain a material with a higher degree of purity (>98%) and –COOH functionalization in a shorter time, at a lower temperature, with a smaller amount and lower concentration of acid, as well as without agitation. An extensive step-by-step characterization of the treated samples has shown that the microwave-assisted treatment has limited effects on the significant characteristics of the nanotubes.

Wide characterisation to compare conventional and highly effective microwavepurification and functionalization of multi-wall carbon nanotubes

CIAMBELLI, Paolo;SANNINO, Diana;SARNO, Maria;LEONE, CATERINA
2011-01-01

Abstract

Both microwave-assisted and conventional acidic treatments for the purification and functionalization of multi-wall carbon nanotubes were investigated. Impurities such as zeolite, catalyst particles and amorphous carbon were eliminated. In comparison to the harshness of the acidic treatment of a conventional technique, the microwave-assisted procedure makes it possible to obtain a material with a higher degree of purity (>98%) and –COOH functionalization in a shorter time, at a lower temperature, with a smaller amount and lower concentration of acid, as well as without agitation. An extensive step-by-step characterization of the treated samples has shown that the microwave-assisted treatment has limited effects on the significant characteristics of the nanotubes.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/3022914
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